1 files changed, 1 insertions, 1 deletions

diff --git a/net/mac80211/ieee80211_ioctl.c b/net/mac80211/ieee80211_ioctl.c
index 8296e7de12c7..d48f3aa30e30 100644
--- a/net/mac80211/ieee80211_ioctl.c
+++ b/net/mac80211/ieee80211_ioctl.c
@@ -821,7 +821,7 @@ static int ieee80211_ioctl_prism2_param(struct net_device *dev,
                 break;
 
         case PRISM2_PARAM_PREAMBLE:
-                if (sdata->type != IEEE80211_IF_TYPE_AP) {
+                if (sdata->type == IEEE80211_IF_TYPE_AP) {
                         if (value)
                                 sdata->flags |= IEEE80211_SDATA_SHORT_PREAMBLE;
                         else